The Jets are halfway through their preseason slate after a 15-13 loss against the Washington Redskins on Thursday night at FedEx Field in Landover, Maryland. The first two games and the first few weeks of practice have given plenty of indications on which players do and don't belong on the field. Here, we break down the Jets' 13 biggest position battles – from quarterback to backup center – highlighting the ones that are still too close to call and the ones that are all locked up, based on what we've seen so far this preseason.